Dispersant composition

a technology of dispersant and composition, which is applied in the field of watersoluble dispersant composition, can solve the problems of relatively high cost of naphthalene oil refinery and substantial volume of naphthalene oil burning, and achieve the effect of improving the plasticity of aqueous cementitious slurries

Inactive Publication Date: 2004-02-05
GEO SPECIALTY CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

0018] The middle fraction sulfonic acid salt polymer formed in accordance with the method of the invention is useful as a dispersant in a broad range of applications. For example, the dispersant can be used to improve the plasticity of aqueous cementitious slurries that hydrate and thus harden by the action of water (e.g., Portland cement, concrete, mortar and gypsum). The polymer can be used as a direct replacement for sulfonated naphthalene / aldehyde condensate salt polymers in such applications.

Problems solved by technology

Because the refinement of naphthalene oil is relatively expensive, a substantial volume of naphthalene oil is burned to generate heat.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 3

[0025] 100 grams of Portland cement was added to a disposable beaker. 35 grams of distilled water was added to the beaker and the Portland cement and distilled water were mixed together for about 30 seconds by hand using a metal spatula to produce a slurry. 1.0 ml of the dispersant formed in Example 1 was added to the slurry using a disposable syringe, and then the slurry was hand-mixed for an additional 20 seconds. The cement slurry was then poured into the mini-slump cone discussed above until the mini-slump cone was filled to the top with the cement slurry. The mini-slump cone was lifted quickly and evenly from the glass plate, allowing the cement slurry to flow onto the glass plate. After waiting one minute, the diameter of the cement slurry patty formed was then measured. Generally speaking, the less viscous the cement slurry, the larger the slump diameter. The slump diameter was 16.8 cm.

example 4

[0026] 100 grams of Portland cement was added to a disposable beaker. 35 grams of distilled water was added to the beaker and the Portland cement and distilled water were mixed together for about 30 seconds by hand using a metal spatula to produce a slurry. 1.5 ml of the dispersant formed in Example 1 was added to the slurry using a disposable syringe, and then the slurry was hand-mixed for an additional 20 seconds. The cement slurry was then poured into the mini-slump cone discussed above until the mini-slump cone was filled to the top with the cement slurry. The mini-slump cone was lifted quickly and evenly from the glass plate, allowing the cement slurry to flow onto the glass plate. After waiting one minute, the diameter of the cement slurry patty formed was then measured. Generally speaking, the less viscous the cement slurry, the larger the slump diameter. The slump diameter was 17.3 cm.

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Abstract

The present invention provides a sulfonated coal tar distillate salt polymer that is a condensation product of an aldehyde, preferably formaldehyde, and a sulfonated middle fraction obtained during coal tar distillation. The middle fraction includes from about 40% to about 95% by weight naphthalene and from about 5% to about 60% by weight of a plurality of compounds selected from the group consisting of quinoline, indene, biphenyl, indane, acenaphthene, anthracene, phenanthrene, methyl naphthalene, cresol, phenol, xylenol, and tetralin. The present invention also provides a method of forming a sulfonated coal tar distillate salt polymer. The method includes sulfonating the middle fraction to form a middle fraction sulfonic acid mass, optionally adding a first portion of water to the middle fraction sulfonic acid mass to form a mixture, reacting the mixture and an aldehyde to form a condensate, optionally adding a second portion of water to dilute the condensate, and adding a base to form a sulfonated middle fraction salt polymer. Sulfonated middle fraction salt polymers formed in accordance with the method of the invention are useful as dispersants and plasticizers in aqueous cementitious slurries.

Description

[0001] The present invention relates to a dispersant composition, a method of forming a dispersant composition, and an aqueous cementitious slurry containing a dispersant composition.[0002] It has been known for many years that naphthalene sulfonic acid can be condensed with formaldehyde to form useful reaction products. See, e.g., Frohmader, U.S. Pat. No. 2,529,602, and Johnson, U.S. Pat. No. 3,277,162. Geo Specialty Chemicals, Inc. of Cleveland, Ohio, the assignee of the present application, markets a line of sulfonated naphthalene formaldehyde condensate products under the LOMAR.RTM. mark that are useful in a variety of applications, including as dispersants and / or plasticizers in the manufacture of aqueous cementitious products (e.g., concrete and gypsum), and in the oil field, ceramics and polymerization industries.[0003] The naphthalene used in the manufacture of prior art sulfonated naphthalene formaldehyde condensate products is relatively pure, typically comprising greater ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C04B24/22C04B28/04C04B28/14C08G8/10C08G16/02C09K23/00
CPCB01F17/0057C04B24/22C04B28/04C04B28/14C04B2103/30C04B2103/408C08G16/0293C08G8/10C09K23/00C09K23/12
Inventor SAVOLY, ARPADELKO, DAWN P.VEAL, BENNIEMCMAHON, MICHELLE L.HELLER, DAVID B. JR.
Owner GEO SPECIALTY CHEM
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